Apparatus for treating pasty materials, such as chocolate.



E. L. A. SAVY.

APPARATUS FOR TREATING PASTY MATERIALS,SUGH AS CHOCOLATE.

APPLICATION FILED 11mm, 1910.

1 031545. Patented Sept. 3, 1912.

2 SHEBT8SHEET 1.

E. L. A. SAVY.

APPARATUS FOR TREATING PASTY MATERIALS, SUCH AS CHOCOLATE.

APYLIUATION FILED DBO. 14, 1910.

1,037,545. Patented Sept. 3,1912\ 2 anus-sum 2.

[:iil Y l i 21 k 2 l: I {I A. eg A 19 l i l i 1 L i 22 mag/m5 EMTLE LOUIS ALFRED SAV'Y, 0F PARIS, FRANCE.

APPARATUS FOR TREATING PASTY MATERIALS, SUCH AS CHOCOLATE.

Specification of Letters Paten Application filed December 14, 1910. Serial No. 597,31G.'

Patented Sept. 3, 1912.

To all whom it may concern: Be it known that I, EMILE LoUIs ALFRED SAvY, a citizen of-the Republic of France,

residing at Paris, France, have invented new and useful Improvements in Apparatus. for Treating Pasty Materials, such as Chocolate, which improvements are fully set forth in the following specification.

The cooling, heating or drying of pasty materials present serious diificulties especially whenit is desired to bring the material exactly to a given temperature as is indispensable for chocolate intended for molding. Numerous apparatus have been constructed with this object in view almost all of them being based upon the employment of metal cylinders heated or cooled. according to circumstances, but none of them has given good results from the industrial point of view, either owing to the small output'or because of the difliculty of keeping. the material upon the cylindrical surface.

The. present invention provides an apparatus for the treatment of pasty materials which operates with consistent efliciency and presents none of the defects above enumerated, and to these ends consists in the combination of parts particularly pointed out in the claims.

A convenient embodiment of the invention is .illustrated in the accompanying drawings in which Figure 1 is an elevation, partly broken away .showing the internal arrangements. Fig. 2 is a cross section. Fig. 3 illustrates details of construction.

My improved apparatus is constituted by a double-walled drum l1 keyed upon a hollow shaft 2. Tubular arms 14, 14:, 14",

l 14" externally covered with a heat-retaining coat place the hollow part of the shaft 2 H1 communication with the jacket 21 connected with the rim of the drum, the latter bein divided into four separate sectors furnished with exhaust orifices 15. A fixed sheet metal envelop 10 forms .a sort of chamher in which the drum 11 rotates fricti0nally, its rim dividing it into two quite distinct compartments. One of .these compartments 23 forms an annular passage surrounding the exterior of the rim; the other compartment 22 forms inside the [drum a chamber into which the orifices 15 open,

thereby establishing direct communication with the exterior through the tubes 20.

19 is a partition forming a tight joint and dividing the shaft into two parts.

The drum 11 is channeled around its periphery; the shape'of these channels mafybe variable and according to the resultto be obtained they may be triangular, rectangular or dovetailed as shown at m, y and 2 respectively in Fig. 3. -A small, smooth, hollow, cooling cylinder 4 contacts with the large channeled drum at 25;-heating is effected by a current of water, steam or other fluid. Two hand wheels 24 acting upon the bearings supporting its shaft enable it to be moved farther away or brought closer as desired.

A ho per 5 fitted to both the drums receives t e material to be cooled or heated.

An endless screw conveyer 6 is mounted parallel with the rim of the large drum; it rotates in a metal cylinder in the manner of a sausage machine into the hopper of which a scraper 7 fits; the scraper is so shaped as to fit into the channels formed in the large drum thus detachin the material from the latter in the rotation of the drum. A

The material to be cooled, heated, dried or brought to' a given temperature is intro- 7 duced into the hopper 5. and the two cylinders rotatedin the direction indicated by the arrows b alid-c (Fig.1) by the inter-' mediary ofa driving pulley and belt. The ratio of the speeds of the two drums being such that the circumferential velocity of the. larger drum, that is to say, of the channeled cylinder 11, is greater than that of the small, smooth drum 4 it follows that the material wedged between the two drums, exactly fills thej channels in the large drum and is carried along by said drum, the small drum serving simultaneously as a stufler and smoother opposing the .descent'of the material placed in the hopper. The pasty material thus divided into thin strips in the. thickness of the rim of the .drum remains adhering thereto. At

the time of starting a current of air or other gaseousfiuid at the required tempera ture, is admitted simultaneously into the hollow shaft 2' of the drum 11 andinto the pieces of the proper weight for the mo annular passage 23 outside the rim; this fluid is blown-in by a fan and, generally speaking, it consists of air which is cooled or heated by its passage through a radiator of any convenient kind, the temperature of which is regulated by an electric, gas or steam thermo-regulator.

The fluid in the hollow shaft 2 follows the arrows 21 and passes through the tubular arms so as to open into the sectors of the double-walled rim over the inner wall of which it passes and issues through the orifices 15. and 20, being ifdesired, returned to the radiator WhlCh againimparts to it the required temperature thus effecting a complete cycle. The air injected through the nozzle 8 into the outer annular surface follows the arrows 25 in the opposite 'direction to that in which the drum runs issuing at 16 and being reconducted to the radiator if considered desirable.

It will be understood that the material divided into thin strips subjectedlon every face to the action of the cold or hot fluid, becomes cooled or heated very rapidly in proportion to the temperature of the air and to the speed imparted to the drum; by regulating these two factors it is thus possible to obtain a well defined and uniform degree of temperature which is of great importance in the case of chocolate intended to be molded. The pasty material thus brought to the desired temperature is detached from the drum 11 by the scraper 7; it falls into the screw 6 where it is thoroughly mixed and leaves it in the shape of sausages which, in the case of firm paste chocolate are delivered automatically by the addition of the well-known barrel of chocolate weighing machines. These pieces fall directly l ltO molds arranged on a conveyer placed in proximity; they are then patted, cooled and unmolded' in a suitable molding and unmolding machine. In the case of soft chocolate the material could be directed at once =to a suitable semi-liquid chocolate molder. I

The channeled drum 'may bereplaced by a smooth drum in the case of material, the adherence of which is sufficient to permit of displacement in a thin layer. As in the example illustrated the machine may also comprlse small channeled cylinders r arranged 1n the path of the material and adapted to plow up the surface of the paste in the channels so as to present fresh surfacesof said paste to the action of the fluid in the compartment 23. Finally, in order to increase the output a number of apparatus such as described above may be coupled together in which case the material leaving the endless conveyer 6 of every machine but the last, would pass into the hopper 5 of a similar -Inachine adjacent thereto.

in ding Having now particularly described and I ascertained the nature of my said inventionand in what manner the same is to be performed, I declare that what I claim is 1. .Apparatus for bringing" pasty materials to a predetermined temperature, comprising conveying means, means to direct a fluid at the same temperature as that required for the pasty material over the outer surface of said conveying means, means to direct a flow-of fluid at the same temperature over the inner surface of said conveying means, and means to feed material to said conveying means."

2. Apparatus for bringing pasty materials to a I predetermined temperature, comprising a rotating drum, means to rotate said drum, means to direct a fluid at the same temperature as that required for the pasty material over the outer surface of said drum, means to direct a flow of fluid at'the same temperature .over the inner surface'of said drum, and means to feed material to said drum.

3. Apparatus for bringing pasty materials to a predetermined temperature,

comprising conveying means, means to direct a fluid at the same temperature as that required for the pasty material over the outer surface of said conveying means, means to direct a flow of fluid at the same temperature over the inner surface of said conveying means, a hopper, and means to feed material from the hopper to said conveying means withoutmoving said material relative to the conveying means after it has. been deposited thereon.

4. Apparatus for bringing past y materials to a predetermined temperature, comprisinga rotating drum, means to rotate said drum, means to direct a fluid at the same temperature as that required for the pasty material over the outer surface of said drum, means 'to direct aflo w of fluid at the same temperature over the inner surface of said drum,a hopper, and means to feed material from the hopper to said conveying means without moving said material relative to the conveying means after it has been deposited thereon.

5. Apparatus for bringing pasty materials to a predetermined temperature, compris g conveying means, means, to direct flows of fluid in the same direction at the fluid in the same direction at the same temperature as that required for the pasty material on both the inner and outer sides of I said conveying means and in 'the opposite i conveying means, means to direct flows o 7 a rotating drum, means to rotate means to direct flows of fluid 1n the same direction to the direction of movement of said conveying means, and means to feed material to said conveying means.

7. Apparatus for bringing pasty materials to a predetermined temperature, comprising a rotating drum, means to rotate said drum, means to direct flows of fluid in the same direction at the same temperature as thatrequired for the pasty material on both the inner and outer sides of said rotating drum, and means to feed material to said drum.

. 8. Apparatus for bringing pasty materials to a predetermined temperature, comprising said drum,

direction at the same temperature as that required for the pasty material on both the inner and outer sides of said rotating drum and in the opposite direction to the direct-ion of*- movement of said rotating drum, and means to feed material to said drum.

9. In a machine for treating pasty materials in combination, a hollow hub comprising an inlet hub portion and an outlet hub portion, a chamber, a drum mounted on said hub and adapted to rotate within said chamber, a pipe leading to the inner periphery of said drum and connecting with said inlet hub portion, guiding means to direct a flow of fluid from said pipe along the inner periphery of said drum, an outlet from said guiding means to said chamber, connections between said chamber and the outlet hub portion, and means to drive said hub.

I 10. In a machine for treating pasty materials in combination, a hollow hub comprising an inlet hub portion and an outlet hub portion, a chamber, a drum mounted on said hub and adapted to rotate within said chamber, a pipe leading to the inner periphery of said drum and connecting with said inlet hub portion, guiding means to direct a flow of fluid from said pipe along the inner peripheryof said drum, an outlet from said guiding means to said chamber, connections between said chamber and the outlet hub portion, means to direct a flow of fluid in the space between the outer periphery of said drum and. the inner Wall of said chamber and meansto drive said hub.

11. Apparatus for treating pasty material comprising a channeled drum, means to drive said drum, means to direct a fluid into said drum and means to feed material to the channeled face of said drum.

12. Apparatus for treating pasty mateery of said drum,

rial comprising a channeled drum, means to drive said drum, means to direct a fluid into said drum, a hopper and a feed drum to feed the material from the hopper to said channeled face of the drum.

13. Apparatus for treating pasty mate rial comprising a channeled drive said drum, means to direct a fluid int-o said drum, means to feed material to the channeled face of said drum and means to remove the pasty material from said drum.

14. Apparatus for treating pasty material comprisingachanneled drum, means to drive said drum, means to direct a fluid into said drum, a hopper, a feed drum to feed the material from the hopper to said channeled drum and means to remove the pasty material from said drum.

15. Apparatus for treating pasty material comprising a channeleddrum, means to drive said drum, means to direct a fluid into said drum, means to feed material to the channeled face of said drum and means projecting in the path of said channeled drum to break up the surface of the pasty material.

16. Apparatus for treating pasty material comprising a channeled drum, means to drive said drum, means to direct a fluid into said drum, means to feed material to the channeled face of said drum and channeled rollers projecting in the path of said channeled drum to break up the surface of the pasty material. I

17. Apparatus for treating pasty material comprising achanneled drum, means to drive said drum, means to direct fluid over the outer periphery of said drum, means to direct a flow of fluid over the inner periphery of said drum and means to feed mate-' rial to the channeled face of said drum.

18. Apparatus for treating pasty materail comprising a channeled drum, means to drive said drum, means to direct. fluid over the outer periphery of said drum, means to direct a flow of fluid over the inner peripha hopper and a feed drum to feed the material from the hopper to said channeled drum I In testimony whereof I have signed this specification in the presence of two subscribmg witnesses.

EMILE LOUIS ALFRED SAVY. Witnesses:

EMILE LEnRE'r,

v H. C. Coxn.

drum, means to 

